UPDATED!! GT MOTORSPORTS Sets the bar! VQ35DE 855RWHP @ 22 PSI
02-17-2007, 07:27 AM
#1
UPDATED!! GT MOTORSPORTS Sets the bar! VQ35DE 855RWHP @ 22 PSI
We are pleased to announce our latest accomplishment, As many of you know we have a 4.24L Z shop car that you have all been anxiously waiting to see what we do with it. Last night I decided to pull a 24 hour shift and begin tuning our beast. The engine had almost 1,000 miles on it and I felt was ready for some dyno time (breaking in the engine properly is VERY important for any built high performance engine!) I started at 12psi (waste gate pressure on APS Extreme kit) and ended the tune SEVERAL hours and countless dyno pulls later at 20 PSI, all the way to dawn 
The last run for the night ( run #43, that's right 43 back to back dyno runs in one night/morning!) yielded our goal of 800rwhp, on 105 octane UNLEADED, on a very conservative tune. As stated before our number one priority is to have our engines LAST! Anyone can make power on a dyno, but not everyone can make it last in the real world. The car was very stable at these power levels and I feel we have more room left to push. As a matter of fact we will be driving the car today to Auto Crave 2007. After a few thousand more miles on the car and some real world condition tests we will be back on the dyno with some C16 and Red bull
, reaching to break the 4 digit mark!(1,000rwhp+ coming soon!)
Car Specifications:
GTM 4.24L Stroked Engine ('06 350Z RevUp)
FI: APS Extreme Twin Turbo Kit (50lbs/min turbos)
Short Block: GTM 4.2L stroker short block
Heads: GTM Stage 4 heads (1.5mm oversize valves)
Cams: GTM RevUp cams (prototype)
Studs: GTM 12mm head studs
HG: Cometic head gasket
Valve train: Ferrea single springs/Ti retainers
Fuel injectors: HKS 1000cc
Fuel system: CJ Motorsports Stage 3 Dual Pump (prototype)
Cooling: Nissan Pathfinder mod, PWR custom radiator, dual oil coolers (oil/power steering fluid)
Intake: Motordyne Engineering MREV Isothermal (5/16” spacer)
Exhaust: GTM Custom 3in True Dual Exhaust
Clutch: GTM Spec/Exedy Triple Plate Carbon (prototype)
Red line: 8000rpm
EMS: HKS Fcon Vpro
DYNO RUN VIDEO LINK HERE!
*Update 2/22/2007 3:00AM
Got the car back on the dyno and did some more tuning, cleaned up the topend, APS Extreme kit is holding boost VERY well and is VERY responsive, boost comes on quick and holds all the way to redline (Logging on VPro). Below are the new dyno numbers and a overlay comparsion.
Also this is a less conservative tune than the previous but definetly not an aggresive tune at all. the same VP racing 105 fuel was used as well.
22PSI
20PSI and 22PSI comparsion
20 PSI
18PSI
16PSI
14PSI
12PSI
The last run for the night ( run #43, that's right 43 back to back dyno runs in one night/morning!) yielded our goal of 800rwhp, on 105 octane UNLEADED, on a very conservative tune. As stated before our number one priority is to have our engines LAST! Anyone can make power on a dyno, but not everyone can make it last in the real world. The car was very stable at these power levels and I feel we have more room left to push. As a matter of fact we will be driving the car today to Auto Crave 2007. After a few thousand more miles on the car and some real world condition tests we will be back on the dyno with some C16 and Red bull
, reaching to break the 4 digit mark!(1,000rwhp+ coming soon!)Car Specifications:
GTM 4.24L Stroked Engine ('06 350Z RevUp)
FI: APS Extreme Twin Turbo Kit (50lbs/min turbos)
Short Block: GTM 4.2L stroker short block
Heads: GTM Stage 4 heads (1.5mm oversize valves)
Cams: GTM RevUp cams (prototype)
Studs: GTM 12mm head studs
HG: Cometic head gasket
Valve train: Ferrea single springs/Ti retainers
Fuel injectors: HKS 1000cc
Fuel system: CJ Motorsports Stage 3 Dual Pump (prototype)
Cooling: Nissan Pathfinder mod, PWR custom radiator, dual oil coolers (oil/power steering fluid)
Intake: Motordyne Engineering MREV Isothermal (5/16” spacer)
Exhaust: GTM Custom 3in True Dual Exhaust
Clutch: GTM Spec/Exedy Triple Plate Carbon (prototype)
Red line: 8000rpm
EMS: HKS Fcon Vpro
DYNO RUN VIDEO LINK HERE!
*Update 2/22/2007 3:00AM
Got the car back on the dyno and did some more tuning, cleaned up the topend, APS Extreme kit is holding boost VERY well and is VERY responsive, boost comes on quick and holds all the way to redline (Logging on VPro). Below are the new dyno numbers and a overlay comparsion.
Also this is a less conservative tune than the previous but definetly not an aggresive tune at all. the same VP racing 105 fuel was used as well.
22PSI
20PSI and 22PSI comparsion
20 PSI
18PSI
16PSI
14PSI
12PSI
Last edited by Sam@GTM; 06-12-2007 at 03:13 AM.
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02-17-2007, 08:03 AM
#9
Thank you everyone for the kind words, Sam does put a lot of time and effort into every car he tunes, thats why most the dynos you will see from us are late at night. It was a very long night/morning but well worth it! This machine just sounds awesome on the dyno. The 4.2L Stroker sounds almost completely diffrent then the 3.5L. Its so nice!
Thanks again and we appreciate your support!
-George
GT Motorsports
Thanks again and we appreciate your support!
-George
GT Motorsports
02-17-2007, 08:31 AM
#14
Originally Posted by JDMFairladyZ33
What? You guys didn't hit 1000 hps? Weak.....LOL j/k 
that's insane guys....congrats!!!. This Alex's car right?
Originally Posted by Sam@GTM
We are pleased to announce our latest accomplishment, As many of you know we have a 4.24L Z shop car
02-17-2007, 08:41 AM
#15
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CGeat work! Is the intent to market the results in the way of a packaged product? Just curious as to how one would achieve the same result in my car o the East coast. A complete crated engine would work, but at what price?
